JP2023069523A - spectacle lenses and spectacles - Google Patents

Abstract

To provide antibacterial spectacle lenses.SOLUTION: A spectacle lens is provided, comprising a lens base material and an organic layer containing a cationic organic compound.SELECTED DRAWING: None

Description

The present invention relates to spectacle lenses and spectacles.

In Patent Document 1, a synthetic resin surface is coated with an antibacterial surface coating agent containing a polymerizable compound having at least two (meth)acryloyloxy groups in the molecule and zeolite ion-substituted mainly with silver ions. , a cured antibacterial synthetic resin molded article is disclosed.

JP-A-9-327622

Patent Literature 1 discloses imparting antibacterial properties to synthetic resin moldings used for building materials, various indoor structural materials, signboards, displays, lighting fixtures, and the like with the surface coating agent.

In recent years, the need for antibacterial properties is increasing. Under such circumstances, if spectacle lenses can be endowed with a function of inhibiting the growth of bacteria (that is, antibacterial properties), the added value of spectacle lenses can be increased.

An object of one aspect of the present invention is to provide an antibacterial spectacle lens.

One aspect of the present invention is
A spectacle lens having a lens substrate and an organic layer containing a cationic organic compound,
Regarding.

The spectacle lens can exhibit antibacterial properties as a result of the cationic organic compound functioning as an antibacterial agent.

According to one aspect of the present invention, it is possible to provide an antibacterial spectacle lens.

[Glasses lens]
The spectacle lens will be described in more detail below.

In the present invention and this specification, the term "organic layer" means a layer containing an organic substance, preferably a layer containing an organic substance as a main component. Here, the main component is the component that accounts for the most in the layer, and is, for example, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass with respect to the mass of the layer. It can be a component that occupies the above. Such a main component accounts for, for example, 100% by mass or less, less than 100% by mass, 99% by mass or less, 98% by mass or less, 97% by mass or less, 96% by mass or less, or 95% by mass or less with respect to the mass of the layer. can be a component. The above points also apply to the main components of the inorganic layer described later. One form of the organic layer is a hardening layer called a hard coat layer, and another form of the organic layer is a base layer to be described later. Details of these layers will be described later.

<Cationic organic compound>
The spectacle lens has an organic layer containing a cationic organic compound. A "cationic organic compound" is an organic compound that can ionize into cations (cations). Cationic organic compounds can function as antimicrobial agents. Therefore, the organic layer containing the cationic organic compound can contribute to the spectacle lens exhibiting antibacterial properties as an antibacterial layer. Furthermore, the present inventors have investigated and confirmed that spectacle lenses having an organic layer containing a cationic organic compound can exhibit excellent light resistance in addition to excellent antibacterial properties. In the organic layer, the cationic organic compound may be contained partially or entirely in the form of a salt, or partially or entirely in the form of ionized cations. In addition, the organic layer may contain only one cationic organic compound, or may contain two or more cationic organic compounds in an arbitrary mixing ratio.

Specific examples of cationic organic compounds include ammonium salts. Ammonium salts are salts of ammonium ions. An ammonium ion is a monovalent cation represented by “NR ₄ ⁺ ”, and each of the four R's independently represents a hydrogen atom or a substituent. A salt of an ammonium ion in which three of the four R's are hydrogen atoms and the other one is a substituent is a primary ammonium salt, and two of the four R's are hydrogen atoms and the other two are substituted A salt of an ammonium ion as a group is a secondary ammonium salt, a salt of an ammonium ion in which three of the four R's are substituents and the other one is a hydrogen atom is a tertiary ammonium salt; Salts of ammonium ions in which all four R are substituents are quaternary ammonium salts. In an ammonium ion containing multiple Rs, the multiple Rs are the same or different substituents. The cationic organic compound contained in the organic layer is preferably a quaternary ammonium salt from the viewpoint of exhibiting better antibacterial properties.

Specific examples of quaternary ammonium salts include alkoxysilane-based quaternary ammonium salts. An alkoxysilane-based quaternary ammonium salt is a quaternary ammonium salt having an alkoxysilyl group. An alkoxysilyl group is a monovalent group represented by "(R ¹¹ O) ₃ Si—", in which three R ¹¹ independently represent an alkyl group. The alkoxysilyl group can be, for example, a methoxysilyl group “(CH ₃ O) ₃ Si—”, an ethoxysilyl group “(CH ₃ CH ₂ O) ₃ Si—”, and the like.

In one form, the organic layer can comprise a methoxysilane-based quaternary ammonium salt, ie, an ammonium salt with a methoxysilyl group. Specific examples of methoxysilane-based quaternary ammonium salts include methoxysilane-based quaternary ammonium salts represented by the following general formula (1).

In general formula (1), R ¹ represents an alkyl group having 12 to 24 carbon atoms, R ² and R ³ each independently represent an alkyl group having 1 to 6 carbon atoms, and X is a halogen ion or an organic carbonyloxy represents an ion (organic carboxylic acid ion).

X in the general formula (1) includes halogen ions such as chloride ion and bromide ion, methylcarbonyloxy ion (acetate ion), ethylcarbonyloxyion (propionate ion), phenylcarbonyloxyion (benzoate ion), and the like. can be exemplified by organic carbonyloxy ions (organic carboxylate ions).

Examples of the alkyl group having 12 to 24 carbon atoms represented by R ¹ include dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, uneicosyl group, doeicosyl group, A trieicosyl group, a tetraeicosyl group, etc. can be illustrated.

Examples of the alkyl group having 1 to 6 carbon atoms represented by R ² or R ³ include methyl group, ethyl group, propyl group, isopropyl group, butyl group, pentyl group, hexyl group and cyclohexyl group.

Specific examples of methoxysilane-based quaternary ammonium salts represented by general formula (1) include octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, dodecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, dodecyl Diisopropyl(3-trimethoxysilylpropyl)ammonium chloride, tetradecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, tetradecyldiethyl(3-trimethoxysilylpropyl)ammonium chloride, tetradecyldi-n-propyl(3-tri methoxysilylpropyl)ammonium chloride, pentadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, pentadecyldiethyl(3-trimethoxysilylpropyl)ammonium chloride, pentadecyldi-n-propyl(3-trimethoxysilylpropyl)ammonium chloride , hexadecyldimethyl (3-trimethoxysilylpropyl) ammonium chloride, hexadecyldiethyl (3-trimethoxysilylpropyl) ammonium chloride, hexadecyldi-n-propyl (3-trimethoxysilylpropyl) ammonium chloride, octadecyldiethyl (3- Examples include trimethoxysilylpropyl)ammonium chloride, octadecyldi-n-propyl(3-trimethoxysilylpropyl)ammonium chloride, and the like. Among these, octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride (formula (1) below) is preferred from the viewpoint of providing spectacle lenses with more excellent antibacterial properties.

As the cationic organic compound, a commercial product can be used, and a compound synthesized by a known method can also be used. Examples of commercially available quaternary ammonium salts include Nikkanon RB series manufactured by Nicca Chemical Co., Ltd.

In the organic layer containing a cationic organic compound, the content of the cationic organic compound is preferably 0.04% by mass or more, more preferably 0.10% by mass or more, based on the total mass of the organic layer being 100% by mass. It is more preferable to have A high content of the cationic organic compound in the organic layer is preferable for the spectacle lens to exhibit superior antibacterial properties. In addition, the content of the cationic organic compound in the organic layer can be, for example, 3.00% by mass or less, and from the viewpoint of improving the appearance quality of the spectacle lens (for example, suppressing fogging), it is 2.50% by mass. It is preferably 2.20% by mass or less from the viewpoint of further improving light resistance and improving film strength.

In one form, the organic layer can include one or more inorganic particles. Inorganic particles can contribute to increasing the film strength of the organic layer and improving the scratch resistance. Specific examples of the inorganic particles include various inorganic particles contained in the curable composition described later and metal oxide particles contained in the interference fringe suppressing layer. When the organic layer containing the cationic organic compound further contains inorganic particles, the content of the cationic organic compound in the organic layer can be 0.5 parts by mass or more with respect to 100 parts by mass of the inorganic particles. , 0.7 parts by mass or more. In addition, in the organic layer, the content of the cationic organic compound can be, for example, 20.0 parts by mass or less with respect to 100 parts by mass of the inorganic particles, improving the appearance quality of the spectacle lens (for example, suppressing fogging). From the viewpoint of , it is preferably 18.0 parts by mass or less, and from the viewpoints of further improvement in light resistance and film strength, it is more preferably 15.0 parts by mass or less.

As a method for forming an organic layer containing a cationic organic compound, a composition containing a cationic organic compound (hereinafter also referred to as "a composition for forming an organic layer containing a cationic organic compound") is applied onto a lens substrate. Examples include a method of forming a coating layer by coating directly or indirectly via another layer, and subjecting this coating layer to a curing treatment, a drying treatment, or the like. In the preparation of the cationic organic compound-containing organic layer-forming composition, various components can be mixed simultaneously or sequentially in any order. In one form, the cationic organic compound is preferably added to a mixture of all ingredients other than the cationic organic compound. The addition rate of the cationic organic compound to the composition containing one or more other components (e.g., inorganic particles, etc.) should be 0.5 g/min or less, from the viewpoint of suppressing clouding of the organic layer-forming composition. preferred from This is because it is considered preferable to add the cationic organic compound at a relatively low speed in order to prevent the various components from aggregating due to the addition of the cationic organic compound. Suppression of the cloudiness of the organic layer-forming composition leads to suppression of fogging of the organic layer formed from this composition, and as a result contributes to improving the appearance quality of the spectacle lens (suppression of cloudiness). preferred because it can The addition rate can be, for example, 0.1 g/min or higher, or it can be below the values exemplified herein.

The layer containing the cationic organic compound can be, for example, one layer or two or more layers selected from the group consisting of a cured layer, an interference fringe suppressing layer and a primer layer described below.

<Hardening layer>
The spectacle lens can include a cured layer obtained by curing the curable composition. Such a cured layer is generally called a hard coat layer. In one form, the organic layer containing the cationic organic compound can be a cured layer obtained by curing a curable composition. An organic layer (cured layer) containing a cationic organic compound can be formed by curing a curable composition containing a cationic organic compound.

The cured layer is formed by curing a curable composition containing, for example, silicon oxide particles (hereinafter also referred to as “component (A)”) and a silane compound (hereinafter also referred to as “component (B)”). Obtainable. The curable composition can further contain a polyfunctional epoxy compound (hereinafter also referred to as "component (C)").

The particle size of the silicon oxide particles of component (A) is preferably in the range of 5 to 30 nm from the viewpoint of achieving both scratch resistance and optical properties.

Component (B) is a silane compound, preferably a silane compound having a hydrolyzable group, more preferably an organic group bonded to a silicon atom and a silane coupling agent having a hydrolyzable group.

The hydrolyzable group includes an alkoxy group, an aryloxy group or a hydroxy group, preferably an alkoxy group.

The silane compound is preferably an organosilicon compound represented by the following general formula (I) or a hydrolyzate thereof.
(R ²¹ ) _a (R ²³ ) _b Si(OR ²² ) _4-(a+b) (I)

In general formula (I), a is 0 or 1 and b is 0 or 1, preferably a is 1 and b is 0 or 1.

R ²¹ represents an organic group having a functional group such as an epoxy group such as a glycidoxy group, a vinyl group, a methacryloxy group, an acryloxy group, a mercapto group, an amino group, a phenyl group, etc., preferably an organic group having an epoxy group. show. The functional group may be directly bonded to the silicon atom, or may be indirectly bonded via a linking group such as an alkylene group.

R ²² is, for example, a hydrogen atom, an alkyl group, an acyl group, or an aryl group, preferably an alkyl group.

The alkyl group represented by R ²² is, for example, a linear or branched alkyl group having 1 to 4 carbon atoms, and specific examples include a methyl group, an ethyl group, a propyl group, a butyl group and the like, preferably is a methyl or ethyl group.

The acyl group represented by R ²² is, for example, an acyl group having 1 to 4 carbon atoms, and specific examples thereof include acetyl group, propionyl group, oleyl group, benzoyl group and the like.

The aryl group represented by R ²² is, for example, an aryl group having 6 to 10 carbon atoms, and specific examples include a phenyl group, a xylyl group, a tolyl group and the like.

^R23 is an alkyl group or an aryl group.

The alkyl group represented by R ²³ is, for example, a linear or branched alkyl group having 1 to 6 carbon atoms, and specific examples thereof include methyl group, ethyl group, propyl group, butyl group, pentyl group and hexyl group. etc.

The aryl group represented by R ²³ is, for example, an aryl group having 6 to 10 carbon atoms, and specific examples include a phenyl group, a xylyl group, a tolyl group and the like.

Specific examples of component (B) include the following silane compounds.
glycidoxymethyltrimethoxysilane, glycidoxymethyltriethoxysilane, α-glycidoxyethyltriethoxysilane, β-glycidoxyethyltrimethoxysilane, β-glycidoxyethyltriethoxysilane, α-glycid Xypropyltrimethoxysilane, α-glycidoxypropyltriethoxysilane, β-glycidoxypropyltrimethoxysilane, β-glycidoxypropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycid xypropyltriethoxysilane, γ-glycidoxypropyltripropoxysilane, γ-glycidoxypropyltributoxysilane, γ-glycidoxypropyltriphenoxysilane, α-glycidoxybutyltrimethoxysilane, α-glycid xybutyltriethoxysilane, β-glycidoxybutyltrimethoxysilane, β-glycidoxybutyltriethoxysilane, γ-glycidoxybutyltrimethoxysilane, γ-glycidoxybutyltriethoxysilane, δ-glycid oxybutyltrimethoxysilane, δ-glycidoxybutyltriethoxysilane, (3,4-epoxycyclohexyl)methyltrimethoxysilane, (3,4-epoxycyclohexyl)methyltriethoxysilane, β-(3,4-epoxy cyclohexyl)ethyltrimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltriethoxysilane, β-(3,4-epoxycyclohexyl)ethyltripropoxysilane, β-(3,4-epoxycyclohexyl)ethyltributoxysilane Silane, β-(3,4-epoxycyclohexyl)ethyltriphenoxysilane, γ-(3,4-epoxycyclohexyl)propyltrimethoxysilane, γ-(3,4-epoxycyclohexyl)propyltriethoxysilane, δ-( 3,4-epoxycyclohexyl)butyltrimethoxysilane, δ-(3,4-epoxycyclohexyl)butyltriethoxysilane, glycidoxymethylmethyldimethoxysilane, glycidoxymethylmethyldiethoxysilane, α-glycidoxyethyl methyldimethoxysilane, α-glycidoxyethylmethyldiethoxysilane, β-glycidoxyethylmethyldimethoxysilane, β-glycidoxyethylmethyldiethoxysilane, α-glycidoxypropylmethyldimethoxysilane, α-glycid xypropylmethyldiethoxysilane, β-glycidoxypropylmethyldimethoxysilane, β-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ -glycidoxypropylmethyldipropoxysilane, γ-glycidoxypropylmethyldibutoxysilane, γ-glycidoxypropylmethyldiphenoxysilane, γ-glycidoxypropylethyldimethoxysilane, γ-glycidoxypropylethyldi Ethoxysilane, γ-glycidoxypropylvinyldimethoxysilane, γ-glycidoxypropylvinyldiethoxysilane, γ-glycidoxypropylphenyldimethoxysilane, γ-glycidoxypropylphenyldiethoxysilane, methyl silicate, ethyl silicate , n-propyl silicate, i-propyl silicate, n-butyl silicate, sec-butyl silicate, t-butyl silicate, tetraacetoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, methyltriacetoxysilane, Methyltributoxysilane, Methyltripropoxysilane, Methyltriamyloxysilane, Methyltriphenoxysilane, Methyltribenzyloxysilane, Methyltriphenethyloxysilane, Ethyltrimethoxysilane, Ethyltriethoxysilane, Vinyltrimethoxysilane, Vinyltri acetoxysilane, vinyltrimethoxyethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltriacetoxysilane, γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane, γ-chloropropyltriacetoxysilane, 3, 3,3-trifluoropropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, β-cyanoethyltriethoxysilane, chloromethyltrimethoxysilane, chloro methyltriethoxysilane, N-(β-aminoethyl)γ-aminopropyltrimethoxysilane, N-(β-aminoethyl)γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldimethoxysilane, N-(β- aminoethyl)γ-aminopropyltriethoxysilane, N-(β-aminoethyl)γ-aminopropylmethyldiethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, γ- Chloropropylmethyldimethoxysilane, γ-Chloropropylmethyldiethoxysilane, Dimethyldiacetoxysilane, γ-Methacryloxypropylmethyldimethoxysilane, γ-Methacryloxypropylmethyldiethoxysilane, γ-Mercaptopropylmethyldimethoxysilane, γ-Mercapto propylmethyldiethoxysilane, methylvinyldimethoxysilane, methylvinyldiethoxysilane and the like;
A commercially available silane coupling agent can also be used as the silane compound. Specific examples of commercially available products include Shin-Etsu Chemical Co., Ltd. KBM-303, KBM-402, KBM-403, KBE402, KBE403, KBM-1403, KBM-502, KBM-503, KBE-502, KBE-503, KBM -5103, KBM-602, KBM-603, KBM-903, KBE-903, KBE-9103, KBM-573, KBM-575, KBM-9659, KBE-585, KBM-802, KBM-803, KBE-846 , KBE-900, etc. 7.

Component (C) is a polyfunctional epoxy compound. A polyfunctional epoxy compound is a compound containing two or more epoxy groups in one molecule. The polyfunctional epoxy compound preferably contains two or three epoxy groups in one molecule.

Specific examples of component (C) include the following polyfunctional epoxy compounds.
1,6-hexanediol diglycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, tetraethylene glycol diglycidyl ether, nonaethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, dipropylene Glycol diglycidyl ether, tripropylene glycol diglycidyl ether, tetrapropylene glycol diglycidyl ether, nonapropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, diglycidyl ether of neopentyl glycol hydroxyhibaric acid ester, trimethylolpropane diglycidyl Ether, trimethylolpropane triglycidyl ether, glycerol diglycidyl ether, glycerol triglycidyl ether, diglycerol diglycidyl ether, diglycerol triglycidyl ether, diglycerol tetraglycidyl ether, pentaerythritol diglycidyl ether, pentaerythritol triglycidyl ether, penta Aliphatic epoxy compounds such as erythritol tetraglycidyl ether, dipentaerythritol tetraglycidyl ether, sorbitol tetraglycidyl ether, diglycidyl ether of tris(2-hydroxyethyl) isocyanurate, and triglycidyl ether of tris(2-hydroxyethyl) isocyanurate , isophoronediol diglycidyl ether, bis-2,2-hydroxycyclohexylpropane diglycidyl ether and other alicyclic epoxy compounds, resorcin diglycidyl ether, bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, aromatic epoxy compounds such as diglycidyl orthophthalate, phenol novolac polyglycidyl ether, cresol novolac polyglycidyl ether; As the component (C), a compound containing two or three epoxy groups (bifunctional or trifunctional epoxy compound) is preferable from the viewpoint of adhesion to the adjacent layer or lens substrate.

Examples of commercially available polyfunctional epoxy compounds include Denacol series EX-201, EX-211, EX-212, EX-252, EX-313, EX-314, EX-321, EX-321, EX- 411, EX-421, EX-512, EX-521, EX-611, EX-612, EX-614, EX-614B and the like.

In addition to the above-described components (A) to (C), the curable composition is mixed with optional components such as an organic solvent, a surfactant (leveling agent), and a curing catalyst, if necessary. can be prepared.

The content of component (A) is preferably 20% by mass or more, more preferably 30% by mass or more, and further It is preferably 40% by mass or more, preferably 80% by mass or less, more preferably 70% by mass or less, and even more preferably 60% by mass or less.
The content of component (B) is preferably 5% by mass or more, more preferably 10% by mass or more, and still more preferably 15% by mass or more, based on the total solid content of the curable composition being 100% by mass. is 80% by mass or less, more preferably 70% by mass or less, and still more preferably 60% by mass or less.
The content of component (C) is, for example, 0% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, preferably 50% by mass, based on the total solid content of the curable composition as 100% by mass. % by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less.
The filler/matrix ratio (hereinafter also simply referred to as "F/M ratio") is preferably 0.5 or more, more preferably 0.6 or more, still more preferably 0.7 or more, and preferably 2.5. It is 0 or less, more preferably 1.8 or less, and still more preferably 1.5 or less. The F/M ratio is the mass ratio of component (A) to the total mass of component (B) and component (C) [component (A) / (component (B) + component (C))]. means.

An example of the curable composition is a curable composition containing composite particles of stannic oxide and zirconium oxide. For such a curable composition, the entire description of WO2005/088352 can be referred to, and for details of various components contained in the curable composition, see paragraphs 0007 to 0045 and the description in the Examples column of the same publication. can.

By using a curable composition containing a cationic organic compound, an organic layer containing a cationic organic compound can be formed as a cured layer obtained by curing the curable composition. When preparing such a curable composition, it is preferable to set the addition rate of the cationic organic compound within the above range for the reasons described above. For example, the addition rate of the cationic organic compound to the curable composition containing inorganic particles can be within the above range.

As a method for applying the curable composition, a known application method such as a spin coating method, a dip coating method, or a spray coating method can be employed. This point also applies to the coating of compositions used for forming various layers described later. From the viewpoint of mass production of spectacle lenses, the dip coating method is preferable. The curing treatment can be light irradiation and/or heat treatment. Curing treatment conditions may be determined according to the types of various components contained in the curable composition and the composition of the curable composition. The film thickness of the cured layer obtained by curing the curable composition is, for example, 1 μm or more and 100 μm or less. The film thickness of the hardened layer is preferably 3 μm or more, more preferably 5 μm or more, from the viewpoint of improving the scratch resistance of the surface. From the viewpoint of significantly obtaining the effect of suppressing interference fringes, the thickness is more preferably 8 μm or more, still more preferably 10 μm or more, and is preferably 80 μm or less, more preferably 60 μm or less, and still more preferably 50 μm or less.

<Underlayer>
The spectacle lens can have one or more base layers between the lens substrate and other layers. The base layer can be positioned, for example, between the lens substrate and the cured layer, and can also be positioned between the cured layer and the inorganic layer described below. The spectacle lens can include one layer or two or more layers of such a base layer. Specific examples of the underlayer include a layer that functions as an interference fringe suppressing layer (for example, an interference fringe suppressing layer called a λ/4 layer) and a primer layer for improving adhesion. The spectacle lens can have one or both of an interference fringe suppressing layer and a primer layer between the lens substrate and the cured layer or between the cured layer and the inorganic layer.

Interference fringe suppressing layer The interference fringe suppressing layer is a layer that can suppress the generation of interference fringes compared to the case where this layer is not included. A layer having an optical thickness of 0.2λ to 0.3λ for light with a wavelength λ of 450 to 650 nm can function as an interference fringe suppressing layer. The physical film thickness of the interference fringe suppression layer can be, for example, in the range of 50 nm to 100 nm.

The interference fringe suppressing layer can be formed, for example, by applying a dispersion containing at least metal oxide particles and a resin to the surface of the lens substrate.

The metal oxide particles can serve to adjust the refractive index of the fringe suppression layer. Examples of metal oxide particles include tungsten oxide (e.g. WO ₃ ), zinc oxide (e.g. ZnO), aluminum oxide (e.g. Al ₂ O ₃ ), titanium oxide (e.g. TiO ₂ ), zirconium oxide (e.g. ZrO ₂ ), Particles of tin oxide (eg, SnO ₂ ), beryllium oxide (eg, BeO), antimony oxide (eg, Sb ₂ O ₅ ), etc. can be mentioned, and two or more kinds of metal oxide particles can be used singly or in combination. Composite oxide particles of two or more metal oxides can also be used. From the viewpoint of optical properties, the particle size of the metal oxide particles is preferably in the range of 5 to 30 nm. When the interference fringe suppression layer is the above metal-containing layer and contains zinc oxide and/or zirconium oxide, these oxides can play a role in adjusting the refractive index and controlling the progress of oxidation of silver.

The resin of the interference fringe suppressing layer can include at least one selected from polyurethane resins, acrylic resins, epoxy resins, etc., preferably polyurethane resins, more preferably water-based resin compositions containing polyurethane resins, That is, it is a water-based polyurethane resin composition. Aqueous polyurethane resin compositions are prepared by, for example, urethanizing a polyol compound and an organic polyisocyanate compound together with a chain extender, if necessary, in a solvent that is inert to the reaction and has a high affinity for water to form a prepolymer. , can be prepared by neutralizing this prepolymer and then dispersing it in an aqueous solvent containing a chain extender to increase the molecular weight. For such water-based polyurethane resin composition and its preparation method, for example, paragraphs 0009 to 0013 of Japanese Patent No. 3588375, paragraphs 0012 to 0021 of Japanese Patent Application Laid-Open No. 8-34897, and Japanese Patent Application Laid-Open No. 11-92653 Paragraphs 0010 to 0033, paragraphs 0010 to 0033 of JP-A-11-92655, etc. can be referred to. As the water-based polyurethane resin composition, commercially available water-based urethane can be used as it is or after being diluted with a water-based solvent as necessary. Commercially available water-based polyurethane resin compositions include, for example, the Evaphanol series manufactured by Nicca Chemical Co., Ltd., the Superflex series manufactured by Daiichi Kogyo Seiyaku Co., Ltd., the Adeka Bontiter series manufactured by ADEKA, and the Olester series manufactured by Mitsui Chemicals, Inc. DIC Bondic series, Hydran series, Bayer Implanil series, Nippon Soflan Soflanate series, Kao Poise series, Sanyo Chemical Industries Sanprene series, Hodogaya Chemical Industry Izerax series , Neoretz series manufactured by Zeneca Co., Ltd., and the like.

The dispersion liquid used to form the interference fringe suppression layer may contain an aqueous solvent. The water-based solvent means a solvent containing water, such as water, a mixed solvent of water and a polar solvent, etc., preferably water. The solid content concentration in the aqueous resin composition is preferably 1 to 60% by mass, more preferably 5 to 40% by mass, from the viewpoint of liquid stability and film-forming properties. The water-based resin composition can also contain additives such as antioxidants, dispersants, and plasticizers, if necessary, in addition to the resin components. Also, a commercially available water-based resin composition may be diluted with a solvent such as water, alcohol, or propylene glycol monomethyl ether (PGM) before use.

By using a water-based resin composition containing a cationic organic compound, an organic layer containing a cationic organic compound is formed as a base layer (interference fringe suppressing layer) formed from the water-based resin composition. be able to. A water-based resin composition is applied to a surface to be coated (for example, a lens substrate surface) to form a coating layer, and at least a portion of the water-based solvent is dried and removed by a drying treatment or the like to solidify the coating layer. A stratum (interference fringe suppression layer) can be formed.

Primer Layer The primer layer can be, for example, a water-based resin layer formed from a water-based resin composition containing a resin and a water-based solvent. The water-based solvent contained in the water-based resin composition is, for example, water or a mixed solvent of water and a polar solvent, etc., preferably water. The solid content concentration in the aqueous resin composition is preferably 1 to 60% by mass, more preferably 5 to 40% by mass, from the viewpoint of liquid stability and film-forming properties. The water-based resin composition can also contain additives such as antioxidants, dispersants, and plasticizers, if necessary, in addition to the resin components. Also, a commercially available water-based resin composition may be diluted with a solvent such as water, alcohol, or propylene glycol monomethyl ether (PGM) before use.

The water-based resin composition can contain a resin component dissolved in a water-based solvent or dispersed as particles (preferably colloidal particles). Above all, it is desirable to use a dispersion in which the resin component is dispersed in the form of fine particles in an aqueous solvent (preferably in water). In this case, the particle size of the resin component is preferably 0.3 μm or less from the viewpoint of dispersion stability of the composition. Further, the pH of the aqueous resin composition is preferably about 5.5 to 9.0 at 25° C. from the viewpoint of stability. The viscosity at a liquid temperature of 25° C. is preferably 5 to 500 mPa·s, more preferably 10 to 50 mPa·s, from the viewpoint of suitability for application. As for the resin, the above description regarding the resin of the interference fringe suppressing layer can be referred to.

By using a water-based resin composition containing a cationic organic compound, an organic layer containing a cationic organic compound can be formed as a base layer (primer layer) formed from the water-based resin composition. can. A water-based resin composition is applied to the surface to be coated (for example, the surface of the interference fringe suppressing layer or the surface of the lens substrate) to form a coating layer, and at least a portion of the water-based solvent is dried and removed by a drying treatment or the like to form the coating layer. By solidifying, a base layer (primer layer) can be formed. The film thickness of the primer layer can be, for example, in the range of 0.01 to 2.0 μm.

<Lens substrate>
The lens substrate of the spectacle lens can be a plastic lens substrate or a glass lens substrate. The glass lens substrate can be, for example, a lens substrate made of inorganic glass. As the lens substrate, a plastic lens substrate is preferable from the viewpoint of being lightweight, hard to break, and easy to handle. Plastic lens substrates include styrene resins such as (meth)acrylic resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resins, polyester resins, and polyether resins. , a urethane resin obtained by reacting an isocyanate compound with a hydroxy compound such as diethylene glycol, a thiourethane resin obtained by reacting an isocyanate compound with a polythiol compound, and a (thio)epoxy compound having one or more disulfide bonds in the molecule. A cured product (generally called a transparent resin) obtained by curing the curable composition contained therein can be mentioned. As the lens substrate, an undyed one (colorless lens) may be used, or a dyed one (dyed lens) may be used. The refractive index of the lens substrate can be, for example, about 1.60 to 1.75. However, the refractive index of the lens substrate is not limited to the above range, and may be within the above range or vertically separated from the above range. In the present invention and this specification, the refractive index refers to the refractive index for light with a wavelength of 500 nm. Further, the lens substrate may be a lens having refractive power (so-called prescription lens) or a lens without refractive power (so-called non-prescription lens).

Spectacle lenses can be various lenses such as monofocal lenses, multifocal lenses, and progressive power lenses. The type of lens is determined by the surface shape of both surfaces of the lens substrate. Also, the surface of the lens substrate may be convex, concave, or flat. In normal lens substrates and spectacle lenses, the object-side surface is convex and the eye-side surface is concave. However, the present invention is not limited to this.

<Inorganic layer>
The spectacle lens has an inorganic layer on the lens substrate. In the present invention and this specification, the term "inorganic layer" means a layer containing an inorganic substance, preferably a layer containing an inorganic substance as a main component. Here, the main component is the component that accounts for the largest amount in the layer, and the main component is as described above for the organic layer. The inorganic layer can be a layer laminated on the surface of the lens substrate via an organic layer containing at least a cationic organic compound.

In one form, the inorganic layer may be a multilayer film of two or more inorganic layers. As such a multilayer film, a multilayer film including one or more layers each of a high refractive index layer and a low refractive index layer can be exemplified. Such a multilayer film is an antireflection film having the property of preventing reflection of light of a specific wavelength or light of a specific wavelength range, or a reflective film having the property of reflecting light of a specific wavelength or light of a specific wavelength range. can be In the present invention and herein, "high" and "low" with respect to "high refractive index" and "low refractive index" are relative designations. That is, the high refractive index layer means a layer having a higher refractive index than the low refractive index layer included in the same multilayer film. In other words, the low refractive index layer refers to a layer having a lower refractive index than the high refractive index layer included in the same multilayer film. The refractive index of the high refractive index material constituting the high refractive index layer is, for example, 1.60 or more (for example, the range of 1.60 to 2.40), and the refractive index of the low refractive index material constituting the low refractive index layer can be, for example, 1.59 or less (eg, in the range of 1.37 to 1.59). However, as described above, the terms "high" and "low" regarding high refractive index and low refractive index are relative terms, so the refractive indices of high refractive index materials and low refractive index materials are limited to the above ranges. not something.

Specifically, high refractive index materials for forming the high refractive index layer include zirconium oxide (eg, ZrO ₂ ), tantalum oxide (eg, Ta ₂ O ₅ ), titanium oxide (eg, TiO ₂ ), and aluminum oxide (eg, TiO 2 ). Al ₂ O ₃ ), yttrium oxide (e.g. Y ₂ O ₃ ), hafnium oxide (e.g. HfO ₂ ), and niobium oxide (e.g. Nb ₂ O ₅ ). can be mentioned. On the other hand, the low refractive index material for forming the low refractive index layer is an oxide selected from the group consisting of silicon oxide (eg SiO ₂ ), magnesium fluoride (eg MgF ₂ ) and barium fluoride (eg BaF ₂ ). or a mixture of one or more of the compounds or fluorides. In the above examples, oxides and fluorides are indicated by stoichiometric compositions for convenience. can be used as

Preferably, the high refractive index layer is a film containing a high refractive index material as a main component, and the low refractive index layer is a film containing a low refractive index material as a main component. Such a film (eg, vapor deposition film) can be formed by forming a film using a film formation material (eg, vapor deposition material) containing the high refractive index material or the low refractive index material as a main component. Films and film-forming materials may contain impurities that are unavoidably mixed in. In addition, other components, such as other inorganic substances and film-forming aids, may be included to the extent that the functions of the main components are not impaired. It may also contain known additive ingredients that fulfill the purpose. Film formation can be performed by a known film formation method, and from the viewpoint of ease of film formation, vapor deposition is preferable, and vacuum vapor deposition is more preferable. The antireflection film can be, for example, a multi-layer film in which high refractive index layers and low refractive index layers are alternately laminated to form a total of 3 to 10 layers. The film thickness of the high refractive index layer and the film thickness of the low refractive index layer can be determined according to the layer structure. Specifically, the combination of layers included in the multilayer film and the film thickness of each layer depend on the refractive index of the film forming material for forming the high refractive index layer and the low refractive index layer, and the spectacle lens by providing the multilayer film. It can be determined by optical design simulation using known techniques based on the desired reflection and transmission properties to be achieved. The multilayer film includes a layer containing a conductive oxide as a main component (a conductive oxide layer), preferably a conductive oxide formed by vapor deposition using a vapor deposition material containing a conductive oxide as a main component. One or more layers of deposited film may be included at any location. The thickness of each layer of the high refractive index layer and the low refractive index layer included in the multilayer film can be, for example, 3 to 500 nm, and the total thickness of the multilayer film can be, for example, 100 to 900 nm. Film thicknesses in the present invention and herein are physical film thicknesses unless otherwise specified.

The inorganic layer functions, for example, as an antireflection film, thereby providing the spectacle lens with antireflection performance with respect to light of a specific wavelength or light of a specific wavelength range.

The spectacle lens can include, at any position, one or more layers that can normally be included in a spectacle lens. An example of such a layer is a water-repellent layer. The water-repellent layer refers to a layer that contributes to the spectacle lens surface exhibiting water repellency, or that contributes to exhibit better water repellency than when this layer is not provided. . An example of the water-repellent layer is a coating film containing an antibacterial agent (for example, silver particles) and a water-repellent agent described in WO2021/060664. For such a water-repellent layer, the entire description of WO2021/060664 can be referred to, and for the details of the antibacterial agent and the water-repellent agent and the coating film forming method, paragraphs 0032 to 0061 of the same publication can be referred to, and the example column of the same publication. You can also refer to

In the spectacle lens, the organic layer containing the cationic organic compound can function as an antibacterial layer, whereby the spectacle lens can exhibit antibacterial properties. In one form, an organic layer comprising a cationic organic compound can also function as an antiviral layer.

[glasses]
One aspect of the present invention relates to spectacles including the above spectacle lens. The details of the spectacle lenses included in these spectacles are as described above. For the spectacles described above, a known technique can be applied to the configuration of the frame and the like.

EXAMPLES The present invention will be further described below with reference to Examples. However, the present invention is not limited to the embodiments shown in Examples.

[Comparative Example 1]
<Plastic lens substrate>
As a plastic lens substrate, a plastic lens for spectacles manufactured by HOYA (trade name EYNOA, refractive index 1.67) was used.

<Interference fringe suppression layer (λ/4 layer)>
Add 126 g of 4-hydroxy-4-methyl-2-pentanone (DAA) and 350.5 g of water to 305.0 g of methanol, and add 217.5 g of thermoplastic resin (superflex 170 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.). 90.0 g of a sol-like material (ZrO ₂ sol) obtained by dispersing 40% by mass of HZ-407MH manufactured by Kagaku Kogyo Co., Ltd. in methanol, and 1.0 g of a leveling agent (Y-7006 manufactured by Dow Corning Toray Co., Ltd.) were added to obtain a liquid. The mixture was stirred at a temperature of 20° C. for 1 hour and filtered to obtain a λ/4 layer liquid.
The resulting λ/4 layer liquid is applied to the surface of a washed plastic lens substrate by a dipping method, dried and solidified in a drying device at an internal atmospheric temperature of 100° C. for 20 minutes, and applied to both sides of the lens substrate. A λ/4 layer having a film thickness (physical film thickness, hereinafter the same) of 85 nm was formed.

<Primer layer>
126 g of 4-hydroxy-4-methyl-2-pentanone (DAA) and 350.5 g of water are added to 305.0 g of methanol, and 217.5 g of a thermoplastic resin (superflex 170 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) is added for leveling. 1.0 g of a primer (Y-7006 manufactured by Dow Corning Toray Co., Ltd.) was added and stirred at a liquid temperature of 20° C. for 24 hours to obtain a primer liquid.
The resulting primer solution was applied to the surface of the λ/4 layer by a dipping method, dried and solidified for 20 minutes in a drying device at an internal atmospheric temperature of 100°C, and a primer layer having a thickness of 1 µm was formed on each side of the lens substrate. formed.

<Hard coat layer>
52 parts by mass of silica particles, 24 parts by mass of a silane coupling agent (KBM-403 manufactured by Shin-Etsu Chemical Co., Ltd., γ-glycidoxypropyltrimethoxysilane) and a polyfunctional epoxy compound (Denacol EX-321 manufactured by Nagase ChemteX Corporation, tri 24 parts by mass of methylolpropane polyglycidyl ether) was mixed to prepare a hard coating liquid.
The prepared hard coat liquid is applied to the surfaces of the primer layers provided on both sides of the lens substrate by a spray coating method, pre-cured by heating for 20 minutes in a heating furnace at an internal atmospheric temperature of 75° C., and then heated. The internal atmosphere temperature of the furnace was raised to 110° C. and the composition was heated at the same temperature for 2 hours for final curing to form hard coat layers each having a thickness of 5 μm on both sides of the lens substrate.

<Inorganic layer (multilayer antireflection film)>
Next, the lens substrate on which the hard coat layer is formed is placed in a vacuum deposition apparatus, and a multilayer antireflection film in which 8 layers of SiO ₂ layers and ZrO ₂ layers are alternately laminated on the surface of the hard coat layer by vacuum deposition method. A film was formed (total thickness: about 400-600 nm). The SiO ₂ layer is a vapor deposition film formed using silicon oxide as a vapor deposition material, and the ZrO ₂ layer is a vapor deposition film formed using zirconium oxide as a vapor deposition material. Each vapor deposition material is a vapor deposition material consisting only of the described oxides, except for unavoidably mixed impurities.

Through the steps described above, a spectacle lens having a λ/4 layer, a primer layer, a hard coat layer and a multilayer antireflection film on both sides of the lens substrate in this order was produced.

[Example 1]
A hard coat liquid was prepared by the method described for Comparative Example 1.
While stirring the prepared hard coating solution at a stirring speed of 500 rpm, a quaternary ammonium salt (Nikkanon RB-40 manufactured by Nikka Chemical Co., Ltd.) was added to the hard coating solution at an addition rate of 0.5 g / min. Stirring was continued for a period of time to prepare a hard coating solution containing a quaternary ammonium salt. The amount of the quaternary ammonium salt added is such that the hard coat layer to be formed has a quaternary ammonium salt content of 0.11% by mass and an ammonium salt content of 0.81 per 100 parts by mass of the silica particles. The amount was set to be part by mass.
A spectacle lens was produced by the method described for Comparative Example 1, except for the above points.

[Example 2]
The amount of the quaternary ammonium salt added to the hard coating solution was such that the hard coating layer formed had a quaternary ammonium salt content of 0.42% by mass and an ammonium salt content relative to 100 parts by mass of the silica particles. A spectacle lens was prepared in the manner described for Example 1, except that the amount was 2.96 parts by mass.

[Antibacterial test]
An antibacterial test was performed on the spectacle lens of Example 1 and the spectacle lens of Example 2 according to JIS Z 2801:2012. The spectacle lens of Comparative Example 1 was used as a reference sample.
After placing a 50 mm × 50 mm test piece (test piece cut out from each spectacle lens) in a sterilized petri dish, 1.0 × 10 ⁵ to 4.0 × 10 ⁵ test bacteria (Staphylococcus aureus or E. coli ) is dropped on the central part of the test piece, and the test piece is covered with a polyethylene film cut into a size of 40 mm x 40 mm. After culturing this petri dish at a relative humidity of 90% or more for 24 hours, the number of viable bacteria per 1 cm ² is measured, and the following antibacterial activity value is calculated.
Antibacterial activity value = Ut-At ≥ 2.0
Ut: Average value of the logarithmic value of the number of viable bacteria per ¹ cm after 24-hour culture of the unprocessed test piece (reference sample) At: Per ¹ cm after 24-hour culture of the antibacterially processed test piece (example sample) SIAA (Antimicrobial Product Technology Council) defines that a product has an antimicrobial effect if the antimicrobial activity value is 2.0 or more. The spectacle lens of Example 1 and the spectacle lens of Example 2 exhibited an antibacterial activity value of 2.0 or more against Staphylococcus aureus and Escherichia coli.

Example 1, except that a plastic lens for spectacles manufactured by HOYA (trade name CR-39, refractive index 1.50) was used as the lens base material, and no interference fringe suppressing layer (λ/4 layer) was formed. A spectacle lens was produced in the same manner. Since the spectacle lens thus produced has an organic layer containing a cationic organic compound as a hard coat layer like the spectacle lens of Example 1, the spectacle lens can function as an antibacterial lens like the spectacle lens of Example 1. is.

[Example 3]
The amount of the quaternary ammonium salt added to the hard coating solution was such that the hard coating layer formed had a quaternary ammonium salt content of 1.66% by mass and an ammonium salt content relative to 100 parts by mass of the silica particles. A spectacle lens was prepared in the manner described for Example 1, except that the amount was 11.83 parts by mass.
A 15 nm-thick water-repellent layer containing silver particles was formed on each inorganic layer (multilayer antireflection film) on both sides of the formed spectacle lens by the method described in paragraphs 0066 to 0067 of WO2021/060554.

[Comparative Example 2]
A spectacle lens was produced by the method described for Comparative Example 1, except that the water-repellent layer was formed on the inorganic layer by the method described for Example 3.

[Antiviral test]
An antiviral test of the spectacle lens of Example 3 was carried out according to ISO21702. The spectacle lens of Comparative Example 2 was used as a reference sample.
A 50 mm×50 mm test piece (a test piece cut out from each spectacle lens) is inoculated with 0.4 ml of the test virus solution and covered with a coating film. The test piece covered with the coating film is hereinafter referred to as a sample.
After inoculation of the virus liquid, the sample is allowed to stand (contact) for 24 hours in an environment with a temperature of 25±1° C. and a relative humidity of 90% or higher.
After 24 hours, the virus is recovered from the sample, and the virus infectivity titer is measured by the plaque method. The following antiviral activity values are calculated.
Antiviral activity value = Ut-At ≥ 2.0
Ut: Viral infectivity value of unprocessed test piece (reference sample) At: Viral infectivity value of antibacterial processed test piece (example sample) In some cases, it stipulates that the product has an antiviral effect. The spectacle lens of Example 3 showed an antiviral activity value of 2.0 or more in an antiviral test using influenza virus (H3N2) as a virus strain.

[Example 4]
The amount of the quaternary ammonium salt added to the hard coating solution was such that the hard coating layer formed had a quaternary ammonium salt content of 2.26% by mass and an ammonium salt content relative to 100 parts by mass of the silica particles. A spectacle lens was prepared in the manner described for Example 1, except that the amount was 16.14 parts by mass.

[Example 5]
The amount of the quaternary ammonium salt added to the hard coating solution was such that the hard coating layer formed had a quaternary ammonium salt content of 2.64% by mass and an ammonium salt content relative to 100 parts by mass of the silica particles. A spectacle lens was prepared in the manner described for Example 1, except that the amount was 18.83 parts by mass.

[Example 6]
A hard coat solution was prepared by the method described for Example 1 in paragraph 0091 of WO2005/088352.
While stirring the prepared hard coating solution at a stirring speed of 500 rpm, a quaternary ammonium salt (Nikkanon RB-40 manufactured by Nikka Chemical Co., Ltd.) was added to the hard coating solution at an addition rate of 0.5 g / min. Stirring was continued for a period of time to prepare a hard coating solution containing a quaternary ammonium salt. The amount of the quaternary ammonium salt added is such that the hard coat layer to be formed has a quaternary ammonium salt content of 2.26% by mass and an ammonium salt content of 3.30 with respect to 100 parts by mass of the inorganic particles. The amount was set to be part by mass.
A spectacle lens was produced by the method described for Comparative Example 1, except for the above points.

[Reference example 1]
A spectacle lens was produced by the method described in Example 1, except that silver particles having a particle size of 2 to 5 nm were added in place of the quaternary ammonium salt when preparing the hard coating solution. The amount of silver particles added to the hard coat liquid is such that the hard coat layer to be formed has a silver particle content of 1.89% by mass and a silver particle content of 3.79% by mass with respect to 100 parts by mass of silica particles. The amount was set to be a portion.

[Film strength (steel wool test)]
A steel wool test was performed by the following method on the surface of the hard coat layer prepared by the method described in Examples 1 to 6 and Reference Example 1.
A 20 reciprocating abrasion test was performed using a reciprocating friction and abrasion tester manufactured by Shinto Kagaku Co., Ltd., using steel wool (#00000 manufactured by Bonstar) under a load of 2.0 kg. After the test, the surface of the hard coat layer was visually observed, and the film strength was evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: No or almost no scratches are observed.
B: Scratches are slightly observed.
C: Obvious flaws are observed.
D: Scratches more serious than C are confirmed.

[Appearance evaluation]
The appearance of each spectacle lens of Examples 1 to 6 and Reference Example 1 was visually observed to evaluate the presence or absence of fogging.

[Lightfastness (yellowing resistance)]
The light resistance of the spectacle lenses of Examples 1 to 4 and Reference Example 1 was evaluated by the following method.
The YI value (initial) of each spectacle lens is measured, and the YI value (after irradiation) is measured again after 300 hours of irradiation with 0.32 kW using a xenon weather meter XA25 manufactured by Suga Test Instruments Co., Ltd., and the difference between them ( (post-irradiation-initial=variation) was obtained as the ΔYI value.
YI values were measured by the following method.
Direct incident reflectance spectral characteristics at the optical center of the object-side surface (convex side) are measured from the object side of the spectacle lens. The YI value is determined according to JIS K 7373:2006 using the measurement results of the normal incidence transmission spectral characteristics thus obtained. Specifically, X, Y, and Z are calculated according to the formula (3) of JIS Z 8701:1999 from the transmission spectrum obtained by measuring the normal-incidence transmission spectral characteristics, and 6. of JIS K 7373:2006. Calculate the YI value for the D65 light source according to the formula in Section 1. It can be said that the smaller the YI value, the less the yellowing.
The light resistance (yellowing resistance) was evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: ΔYI value is 0.5 or less B: ΔYI value is more than 0.5 and 1 or less C: ΔYI value is more than 1 and 2 or less D: ΔYI value is more than 2

Table 1 shows the above results.

The spectacle lens of Reference Example 1 was subjected to an antibacterial test by the method described above. As a result, the antibacterial activity value of the spectacle lens of Reference Example 1 was 2.0 or more. However, as shown in Table 1, the spectacle lens of Reference Example 1 was confirmed to be cloudy in the appearance evaluation, and the light fastness evaluation result was D.
When comparing the examples, in the hard coat layer, the quaternary ammonium salt content is 2.64% by mass and the ammonium salt content is 18.83 parts by mass with respect to 100 parts by mass of the silica particles. Therefore, the spectacle lenses of Examples 1 to 4 and 6, in which the amount of the quaternary ammonium salt in the hard coat layer was smaller than that of Example 5, exhibited superior results in terms of appearance evaluation and film hardness.

Finally, each aspect described above is summarized.

According to one aspect, a spectacle lens is provided having a lens substrate and an organic layer containing a cationic organic compound.

The spectacle lens can exhibit antibacterial properties.

In one form, the cationic organic compound can be a quaternary ammonium salt.

In one form, the organic layer may further include inorganic particles.

In one form, the content of the cationic organic compound in the organic layer may be 0.5 parts by mass or more with respect to 100 parts by mass of the inorganic particles.

In one form, the content of the cationic organic compound in the organic layer can be 0.5 parts by mass or more and 18.0 parts by mass or less with respect to 100 parts by mass of the inorganic particles.

In one form, the content of the cationic organic compound in the organic layer may be 0.04% by mass or more.

In one form, the content of the cationic organic compound in the organic layer can be 0.04% by mass or more and 2.50% by mass or less.

In one form, the spectacle lens can have the organic layer on the lens substrate, and can further have an inorganic layer on the organic layer.

According to one aspect, spectacles including the spectacle lens described above are provided.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

One aspect of the present invention is useful in the field of manufacturing spectacle lenses and spectacles.

Claims (9)

A spectacle lens having a lens substrate and an organic layer containing a cationic organic compound. 2. The spectacle lens according to claim 1, wherein said cationic organic compound is a quaternary ammonium salt. 3. The spectacle lens according to claim 1, wherein the organic layer further contains inorganic particles. 4. The spectacle lens according to claim 3, wherein the content of the cationic organic compound in the organic layer is 0.5 parts by mass or more with respect to 100 parts by mass of the inorganic particles. 5. The spectacle lens according to claim 3, wherein the content of the cationic organic compound in the organic layer is 0.5 parts by mass or more and 18.0 parts by mass or less with respect to 100 parts by mass of the inorganic particles. The spectacle lens according to any one of Claims 1 to 5, wherein the content of the cationic organic compound in the organic layer is 0.04% by mass or more. The spectacle lens according to any one of claims 1 to 6, wherein the content of the cationic organic compound in the organic layer is 0.04% by mass or more and 2.50% by mass or less. The spectacle lens according to any one of claims 1 to 7, comprising the organic layer on the lens substrate, and further comprising an inorganic layer on the organic layer. Spectacles comprising the spectacle lens according to any one of claims 1 to 8.